CN101348256A - Preparation of anhydrous sodium metasilicate - Google Patents
Preparation of anhydrous sodium metasilicate Download PDFInfo
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- CN101348256A CN101348256A CNA2008100293562A CN200810029356A CN101348256A CN 101348256 A CN101348256 A CN 101348256A CN A2008100293562 A CNA2008100293562 A CN A2008100293562A CN 200810029356 A CN200810029356 A CN 200810029356A CN 101348256 A CN101348256 A CN 101348256A
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- anhydrous sodium
- sodium metasilicate
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a method for preparing anhydrous sodium metasilicate. The method comprises the following steps that: (1) firstly, a water solution of sodium silicate (Na2O.n SiO2)(n=1.5 to 3.5) with a solid content of between 20 and 50 percent is mixed with the liquid alkali with the NaOH content of between 20 and 50 percent according to the weight ratio of between 38 and 82: between 18 and 62 and stirred for 15 to 30m; (2) the matters obtained from the step (1) is calcined at a temperature of between 200 and 750 DEG C for 0.5 to 5h and become loose powders, because the water glass with different concentrations and different ratios are adopted to be mixed with the liquid alkali, the anhydrous sodium metasilicate with different mode numbers(between 0.7 and 1.2)can be prepared so as to adept to dispergations of ceramic blanks with different formulas.
Description
Technical field
The present invention relates to the preparation method of the additive in the Production of Ceramics, particularly a kind of anhydrous sodium metasilicate.
Background technology
Clay mineral is as one of main raw material of architectural pottery industry, its mineral granularity is very thin, and it has very big surface-area, character such as charged and aquation are arranged again, it is a kind of special state between colloidal sol-suspension-coarse particle dispersion system that the clay particle is dispersed in the mud that forms in the water, the water ratio height, mobile poor.In order to satisfy the needs of ceramic production technology, it is low to obtain water content, has the mud of good fluidity, stability simultaneously again, must add a certain amount of dispergator in process of production.But the price height that existing dispergator has is as tripoly phosphate sodium STPP; The add-on that has is big, as metasilicate pentahydrate sodium, also has the problem of easily luming and being difficult to operate.So develop a kind of Production of Ceramics that is used for, the additive that result of use is good, price is low, consumption is few, easy to operate has been put on people's research schedule.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the preparation method of the anhydrous sodium metasilicate that a kind of result of use is good, price is low, consumption is few, easy to operate.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of preparation method of anhydrous sodium metasilicate, its step is as follows:
1): elder generation is 20%～50% sodium silicate aqueous solution (Na with solid content
2OnSiO
2) (n=1.5～3.5) and NaOH content is that 20%～50% liquid caustic soda is that 38～82: 18～62 ratio is mixed and stirred 15～30 minutes by weight;
2): then the material that again step 1) is obtained became loose powder to get final product in 0.5～5 hour 200～750 ℃ of calcinings.
The invention has the beneficial effects as follows: the modulus of the anhydrous sodium metasilicate of making by this processing method is 0.7～1.2, the effective content height, and chemically reactive is big, can be quickly dissolved into water, alternative construction sanitary ceramic industry tripoly phosphate sodium STPP commonly used.Simultaneously, the product of different moduluses can dissociate different yin, yang ion ratios in ceramic mud, adapts to the dispergation of the ceramic mud of more different ingredients compositions.
Embodiment
A kind of preparation method of anhydrous sodium metasilicate, its step is as follows:
1): elder generation is 20%～50% sodium silicate aqueous solution (Na with solid content
2OnSiO
2) (n=1.5～3.5) and NaOH content is that 20%～50% liquid caustic soda is that 38～82: 18～62 ratio is mixed and stirred 15～30 minutes by weight;
2): then the material that again step 1) is obtained became loose powder to get final product in 0.5～5 hour 200～750 ℃ of calcinings.
The modulus of the anhydrous sodium metasilicate of making by this processing method is 0.7～1.2, its effective content height, and chemically reactive is big, can be quickly dissolved into water.Alternative construction sanitary ceramic industry tripoly phosphate sodium STPP commonly used.Simultaneously, the product of different moduluses can dissociate different yin, yang ion ratios in ceramic mud, adapts to the dispergation of the ceramic mud of more different ingredients compositions.
For ease of the present invention is further understood, now describe the present invention in conjunction with specific embodiments.
Embodiment 1:
1): be 20% with solid content earlier, modulus is 3.5 sodium silicate aqueous solution (Na
2O3.5SiO
2) be that 50% liquid caustic soda is that 82: 18 ratio is mixed and stirred 30 minutes by weight with NaOH content;
2): then the material that again step 1) is obtained became loose powder to get final product in 5 hours 200 ℃ of calcinings.
The anhydrous sodium metasilicate modulus of gained is 1.2 in this implementation method, and hypothermia grait class raw material consumption is more in being suitable for filling a prescription, and needs the dispergation of the blank of certain sequestering power.
Embodiment 2:
1): be 50% with solid content earlier, modulus is 1.5 sodium silicate aqueous solution (Na
2O1.5SiO
2) be that 20% liquid caustic soda is that 38: 62 ratio is mixed and stirred 15 minutes by weight with NaOH content;
2): then the material that again step 1) is obtained became loose powder to get final product in 0.5 hour 750 ℃ of calcinings.
The anhydrous sodium metasilicate modulus of gained is 0.7 in this implementation method, and mud class raw material consumption is more in being suitable for filling a prescription, the dispergation of the blank that the sintering degree is not high.
Embodiment 3:
1): be that 40% modulus is 2.3 sodium silicate aqueous solution (Na with solid content earlier
2O2.3SiO
2) be that 40% liquid caustic soda is that 66: 34 ratio is mixed and stirred 20 minutes by weight with NaOH content;
2): then the material that again step 1) is obtained became loose powder to get final product in 2 hours 500 ℃ of calcinings.
The anhydrous sodium metasilicate modulus of gained is 1.0 in this implementation method, is suitable for the dispergation of most of construction sanitary ceramic blanks.
Claims (2)
1. the preparation method of an anhydrous sodium metasilicate is characterized in that:
1): elder generation is 20%～50% sodium silicate aqueous solution (Na with solid content
2OnSiO
2) (n=1.5～3.5) and NaOH content is that 20%～50% liquid caustic soda is that 38～82: 18～62 ratio is mixed and stirred 15～30 minutes by weight;
2): then the material that again step 1) is obtained became loose powder to get final product in 0.5～5 hour 200～750 ℃ of calcinings.
2. the preparation method of a kind of anhydrous sodium metasilicate according to claim 1, it is characterized in that: the modulus of resulting anhydrous sodium metasilicate is 0.7～1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100293562A CN101348256A (en) | 2008-07-09 | 2008-07-09 | Preparation of anhydrous sodium metasilicate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100293562A CN101348256A (en) | 2008-07-09 | 2008-07-09 | Preparation of anhydrous sodium metasilicate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101348256A true CN101348256A (en) | 2009-01-21 |
Family
ID=40267256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100293562A Pending CN101348256A (en) | 2008-07-09 | 2008-07-09 | Preparation of anhydrous sodium metasilicate |
Country Status (1)
| Country | Link |
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| CN (1) | CN101348256A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115091A (en) * | 2011-04-22 | 2011-07-06 | 冷水江三A化工有限责任公司 | Preparation method of anhydrous sodium silicate microparticle |
| CN102951652A (en) * | 2012-12-05 | 2013-03-06 | 朔州市润泽投资发展有限公司 | Method for producing sodium metasilicate by low-concentration sodium silicate solution |
| CN116573941A (en) * | 2023-02-28 | 2023-08-11 | 佛山市杨森化工有限公司 | Production process and formula of powder dispergation enhancer |
-
2008
- 2008-07-09 CN CNA2008100293562A patent/CN101348256A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115091A (en) * | 2011-04-22 | 2011-07-06 | 冷水江三A化工有限责任公司 | Preparation method of anhydrous sodium silicate microparticle |
| CN102951652A (en) * | 2012-12-05 | 2013-03-06 | 朔州市润泽投资发展有限公司 | Method for producing sodium metasilicate by low-concentration sodium silicate solution |
| CN116573941A (en) * | 2023-02-28 | 2023-08-11 | 佛山市杨森化工有限公司 | Production process and formula of powder dispergation enhancer |
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Open date: 20090121 |